Music review: The XX at the Great American: Aidin Vaziri | Brooding, introverted, melancholy. Listening to the music the black-clad members of the XX make together, there’s little question they are still dealing with the hangover of their teenage years. But playing the first of two sold-out concerts at the Great American Music Hall on Tuesday, there was another mood in the air that was altogether unexpected: jubilation. Even though they released their superb first album, “XX,” nearly a year ago, things have been building steadily ever since for the young south London trio whose minimalist funk draws equally from contemporary R&B and vintage Cure. The record has gone gold in the United Kingdom. Songs like “Intro” and “Islands” have provided soundtracks for everything from Olympic ads to election specials. They’ve even inspired a Japanese tribute act called the OO. Read more.